Tuff situation. If I were you I would talk to my friend before I did anything else with this girl. If he is a close friend, it would be my opinion that his friendship is more important then any female that may come between you. If he is more in the realm of a casual acquaintance and not a good friend, then forget him and go balls out for the girl.
I hope it works out, but please be sure that you don't ruin a friendship over a girl that might not be around to long.
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"The object of war is not to die for your country but to make the other bastard die for his."
-General George Patton (1885-1945)
Member of CLAN HADB